There are already plenty of exciting wearable devices on the market. These types of devices are going to only get more sophisticated in the future. Solutions such as the StretchSense Fabric Sensor can help with that. This is a ruggedized, yet lightweight fabric sensor with sew-able zones, so you can integrate it into your outfit conveniently.
The sensors stretch as you move your body. They rely on Bluetooth to communicate with your devices. The evaluation kit includes a flexible fabric stretch sensor, a Bluetooth circuit, a battery, and a free app for Android. You can pre-order yours here.